Nothing Special   »   [go: up one dir, main page]

WO1998000728A1 - Motor road vehicle collision warning system - Google Patents

Motor road vehicle collision warning system Download PDF

Info

Publication number
WO1998000728A1
WO1998000728A1 PCT/GB1997/001728 GB9701728W WO9800728A1 WO 1998000728 A1 WO1998000728 A1 WO 1998000728A1 GB 9701728 W GB9701728 W GB 9701728W WO 9800728 A1 WO9800728 A1 WO 9800728A1
Authority
WO
WIPO (PCT)
Prior art keywords
concern
vehicle
collision warning
zone
obstacle
Prior art date
Application number
PCT/GB1997/001728
Other languages
French (fr)
Inventor
Graeme Peter Smith
Nicholas John Kerry
Eric Nicol Clouston
Gordon Keneth Andrew Oswald
Original Assignee
Ford Motor Company Limited
Ford Werke A.G.
Ford France S.A.
Ford Motor Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ford Motor Company Limited, Ford Werke A.G., Ford France S.A., Ford Motor Company filed Critical Ford Motor Company Limited
Publication of WO1998000728A1 publication Critical patent/WO1998000728A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
    • B60W2420/40—Photo, light or radio wave sensitive means, e.g. infrared sensors
    • B60W2420/408—Radar; Laser, e.g. lidar
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/28—Wheel speed
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/003—Bistatic radar systems; Multistatic radar systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/0209—Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/18—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein range gates are used
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9314—Parking operations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9315—Monitoring blind spots
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9317—Driving backwards
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/932—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles using own vehicle data, e.g. ground speed, steering wheel direction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93271—Sensor installation details in the front of the vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93272—Sensor installation details in the back of the vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93274—Sensor installation details on the side of the vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93275—Sensor installation details in the bumper area

Definitions

  • the term 'sensing mode' means a type of collision warning method in which obstacles in a particular zone are monitored for a particular purpose, such as front collision warning, parking aid or side vision aid.
  • the mode switch may be actuated by a driver select control.
  • the mode switch is actuated by mode control means which receives signals from the vehicle operation sensing means to determine the type of sensing mode required. Th s ensures that only one set of sensors is required to achieve a plurality of warning signals, as opposed to a variety of dedicated sensing systems for each function.
  • the graphs of figures 11 and 12 depict the type of output from the antenna indicating the position of the vehicle 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Traffic Control Systems (AREA)

Abstract

A motor road vehicle collision warning system (1) comprising an obstacle sensing system (3), comprising a plurality of sensors (5) together capable of sensing obstacles in any direction around the vehicle (7) wherein each of said plurality of sensors (5) has a predetermined field of view (9) in which it is capable of detecting obstacles and an instantaneous field of view (10, 11), within which obstacles sensed by the sensor causes the obstacles sensing system (3) to generate an obstacle signal, a vehicle operation sensing means (13) for detecting at least one property of the vehicles operation, a zone of concern control means (15) for defining a zone of concern (17) within which sensed obstacles trigger the generation of an obstacle of concern signal whereby the zone of concern (17) is defined in dependence on the property or properties of the vehicles operation sensed by the vehicle operation sensing means (13), and for controlling the sensors such that the instantaneous field of view of the sensors (5) together cover the zone of concern (17) and a warning control system (19) for receiving said obstacle of concern signals and for determining whether a collision warning signal should be generated.

Description

Motor Road Vehicle Collision Warning System
Field of the Invention
This invention relates to collision warning systems for motor land vehicles and in particular to road going vehicles .
Various different types of collision warning systems have been proposed for motor vehicles which will warn of potential collision with moving targets, primarily other vehicles, and stationary obstacles especially when parking. Such systems include 'closing vehicle same lane warning systems' for looking behind a vehicle when it is travelling forwards for noting when a vehicle is approaching from the rear, parking aids for looking forwards when the vehicle is travelling slowly forwards and backwards when the vehicle is travelling slowly backwards, backup aids, short range frontal collision warning systems for looking ahead of the vehicle while driving forwards, parking space measuring aids for measuring the length of a parallel parking space to the side of the vehicle, driver induced impaired visibility aids to help ensure that the driver can notice vehicles approaching his side in an overtaking lane, side vision aids for looking to the side of the vehicle and lane change aids for checking that the driver is free to overtake, or indeed move to an inside lane.
Typically these have all been designed as discrete packages and so a vehicle having a multiplicity of these aids includes a plurality of sensors of different types and ranges looking around the vehicle.
There are many different types of sensor available including radar, ultrasonic, capacitive and infrared which are chosen dependent upon the range required for the sensor. In the specification the term sensor will encompass a transmitter and receiver pair, since the majority of sensor types transmit a signal which is reflected from an obstacle and then received. Measurement of the time delay between transmission and receipt of the signal allows the position of the obstacle to be calculated.
The common features of any of the collision warning systems set out are that they include a sensing system, which has at least one sensor which has a field of view in which it may detect an obstacle and a warning control system which receives obstacle of concern signals from the sensor and analyses them to determine whether a collision warning signal should be generated. This means that false warnings may be avoided, for example noise causes singular false targets. However for each application and at any one time only obstacles in a particular area, known as the zone of concern, are of particular interest. For example in the parking aid, as the vehicle moves forward the area to the front and sides of the vehicle is the zone of concern. During reversing the rear of the vehicle is of primary concern .
The following definitions will be used in the specification
Field of view - the area within which a sensor may be operated to detect the presence of an obstacle. For any sensor the field of view is constant, covering the entire area in which the sensor may be operated to detect obstacles;
Instantaneous field of view - the area within which the sensor may detect the presence of an object at any one time at its instantaneous setting or mode of operation. The instantaneous field of view may be altered by changing the settings of the sensor, for example one or other of the sensors may be switched off, or by altering the mode of operation of the sensor;
Zone of concern - the area within which the presence of an obstacle causes the sensing system to feed an obstacle signal to the warning control system.
The zone of concern lies within the instantaneous field of view of the whole sensing system. For example in front collision warning, even if the sensors may look behind and to the side of the vehicle, this is not relevant to the warning system. In previous systems the field of view is designed to be the zone of concern, so that if the zone of concern is changed, tnen the field of view of the sensing system also needs to be changed.
Statement of Invention
A motor road vehicle collision warning system comprising an obstacle sensing system, comprising a plurality of sensors together capable of sensing obstacles in any direction around the vehicle wherein each of said plurality of sensors has a predetermined field of v ew in which it is capable of detecting obstacles and an instantaneous field of view within which obstacles sensed by the sensor causes the obstacle sensing system to generate an obstacle signal, a vehicle operation sensing means for detecting at least one property of the vehicles operation, a zone of concern control means for defining a zone of concern within which sensed obstacles trigger the generation of an obstacle of concern signal whereby the zone of concern is defined in dependence on the property or properties of the vehicles operation sensed by the vehicle operation sensing means, and for controlling the sensors such that the instantaneous field of view of the sensors together cover the zone of concern and a warning control system for receiving said obstacle of concern signals and for determining whether a collision warning signal should be generated.
The sensing system remains capable of sensing within the entire field of view but only takes notice of what is within the zone of concern. The field of view is constant for any sensing system, but the zone of concern changes dependant on what the vehicle is doing.
The zone of concern may change in accordance with the method of operation of the sensors within the system, i.e. when the instantaneous field of view changes, or the sensor signals may be interpreted in a different way αependant upon the operation of the vehicle.
The vehicle operation sensing means may operate to sense the speed of the vehicle, the gear chosen ( whether forward or reverse), the steering angle, the operation of the direction indicators and the operation of the brake.
The vehicle speed sensor may be coupled to the vehicles speedometer or alternatively may be a separate sensing means .
A first example of a collision warning system in accordance with the invention is a parking aid where the vehicle will move alternately forwards and backwards whilst manoeuvring into position. The sensing system will have at least one sensor facing forwards and at least one facing backwards. The property of operation of the vehicle which is sensed is whether the vehicle is moving forwards or reversing. The zone of concern then alters to the view of the forwardly facing sensor when the vehicle moves forward, and to the view of the rearwardly facing sensor when the vehicle is reversing. In such a system the vehicle operation sensing means includes a gear selected sensor. Preferably the system also includes a steering angle sensor. When a vehicle is reversing in a straight line, the zone of concern is the area directly behind the vehicle. However if the vehicle is being steered around a bend, then the zone of concern is to the rear and the side, the zone changing dependant upon the steering angle.
Similarly, in a frontal collision warning system the area within which an obstacle will cause a potential hazard will depend on the direction of movement of the vehicle, i.e. upon the steering angle. Preferably also in this system one of the modes of operation of the vehicle sensed is the steering angle.
Preferably the collision warning system s a multifunctional system being capable of acting in at least two sensing modes, and including a mode switch for switching between modes of sensing.
The term 'sensing mode' means a type of collision warning method in which obstacles in a particular zone are monitored for a particular purpose, such as front collision warning, parking aid or side vision aid. The mode switch may be actuated by a driver select control. Preferably however the mode switch is actuated by mode control means which receives signals from the vehicle operation sensing means to determine the type of sensing mode required. Th s ensures that only one set of sensors is required to achieve a plurality of warning signals, as opposed to a variety of dedicated sensing systems for each function.
Preferably the system is capable of operating in more than one mode at any one t me. In this case however it is essential to distinguish between different types of collision warning signal. Preferably the system also includes a warning display which displays to the driver the mode of operation of the collision warning system and the type of collision warning generated.
Although a number of types of sensor may be used, the preferred method of sensing is an impulse radar method in which the transmitted signal comprises a succession of pulses, in which the sensing system includes transmitter and antennas and means for detecting the presence or absence of a reflecting target at a predetermined set of ellipsoidal range shells. From this the detection of an obstacle can be accurately ana efficiently effected.
Such a system includes transmitting and receiving antenna menas mounted in positions such that in use the system may detect obstacles around the vehicle.
Preferably the antennas and transmitters are mounted at each corner of the vehicle in the region of the bumpers. Thus there are at least four transmitters and receiver antennas. In most cases an obstacle will lie in the area of overlap between two sensors. This allows the angular position of the obstacle to be measured which with the range is used to pinpoint the obstacle for an accurate position.
Brief Description of the Drawings
A motor road vehicle collision warning system in accordance with the invention will now be described with reference to the accompanying drawings, in which: -
Figure 1 is a block diagram of the key components in the system;
Figure 2 is a diagram illustrating the zone of concern for specific modes of operation of the system; Figure 3 is a schematic plan of a vehicle illustrating sensor position;
Figure 4 is a diagram illustrating the instantaneous field of view of one sensor; Figure 5 is a diagram illustrating the overlap between the fields of view of two sensors;
Figure 6 is a view of the whole field of view of the sensing system;
Figure 7 is a schematic view illustrating calculation of an obstacles position;
Figure 8 is a plan diagrammatic view of a vehicle fitted with an impulse radar system;
Figure 9 is a block diagram of the radar system shown in figure 8; Figure 10 is a diagrammatic side view of the vehicle, illustrating operation of the radar system; and,
Figures 11 and 12 show the ^stereo signature' produced by the system on detection of a car.
Description of the Preferred Embodiment
A motor road vehicle collision warning system 1 comprising an obstacle sensing system 3, comprising a plurality of sensors 5 together capable of sensing obstacles in any direction around the vehicle 7 wherein each of said plurality of sensors 5 has a predetermined field of view 9 in which it is capable of detecting obstacles and an instantaneous field of view 10,11, within which obstacles sensed by the sensor causes the obstacle sensing system 3 to generate an obstacle signal, a vehicle operation sensing means 13 for detecting at least one property of the vehicles operation, a zone of concern control means 15 for defining a zone of concern 17 within which sensed obstacles trigger the generation of an obstacle of concern signal whereby the zone of concern 17 is defined in dependence on the property or properties of the vehicles operation sensed by the vehicle operation sensing means 13, and for controlling the sensors such that the instantaneous field of view of the sensors 5 together cover the zone of concern 17 and a warning control system 19 for receiving said obstacle of concern signals and for determining whether a collision warning signal should be generated.
Figure 2 illustrates the zones of concern about the vehicle in which in particular modes, the presence of an obstacle should generate a warning signal. Throughout these zones of concern the preferred elevation coverage will be from about 0.15m up to the height of the vehicle. Clearly objects above this height such as bridges may be ignored.
The zone of concern 21 for the closing vehicle same lane system covers the lane width within which the vehicle travels , usually 3.7m and extends 30m to the rear of the vehicle. The zone of concern 23 for the parking aid is in two areas 25 and 27 to the front and rear of the vehicle respectively. The area 25 to the front of the vehicle extends 0.6m to the front of the vehicle and 0.5m to each side and the rear area 27 extends 1.5m to the rear for a car, but would be 3m for a van and 0.5m to each side of the vehicle .
The zone of concern 29 for a backup aid extends 10m to the rear and is wider than the vehicle allowing for turning of the vehicle.
The side vision aids zone of concern 31 extends from the wing mirror (not shown) of the vehicle to the rear by 12m and a lanewidth to each side.
The zone of concern 33 for the Driver Impaired Visibility A d is to the side only of the vehicle and a subpart of the zone of concern 31 of the side vision aid. The zone of concern 35 for the frontal collision warning extends 10m to the front of the vehicle and extends wider than the vehicle to allow for turning of the vehicle.
The layout of the sensors is illustrated in figure 3 which illustrates four sensors 37,39,41 and 43 each mounted inside the bumpers 45 of the vehicle by connectors 47. Each is part of the sensing system 3. Each sensor in fact comprises a transmitter 37t,39t,41t and 43t and a receiving antenna 37r,39r,41r and 43r. The central unit 49 includes a power supply for the sensors and houses the zone of concern control unit.
Figure 4 illustrates the instantaneous field of view of sensor 37t when its signal is received by receiver 39r.If figure 5 is referred to, it can be seen that by use of two of the sensor/receiver combinations an overlapped area 51 is created within which two sensors can detect the obstacle.
As can be seen in figure 7 if the range from one sensor Rl is known , and the range from second sensor R2 is also known, together with the distance between the two sensors D, this can be used to plot the coordinates X and Y of the obstacle.
Figure 6 illustrates the field of view of the whole system of sensors . Because the signal from for example transmitter 37t can be received by receivers 39r at the front of the vehicle, and 41r at the rear of the vehicle, these overlapping areas are created.
Thus areas 10 and 11 are instantaneous fields of view of the sensor, chosen dependant on the direction of movement of the vehicle and the mode of sensor required.
The system is a multifunctional system capable of operating in all the modes set out and shown in figure 2. As can be seen in figure 5, the field of view of all the sensors allows all the zones of concern to be covered.
The system also includes mode switch 53 which is coupled to driver select control 55 allowing the selection of a mode of operation, for example if the driver is about to park. It is also coupled to mode control means 57 which receives signals from the vehicle operation sensing means to determine the type of sensing mode required.
For example selection of reverse gear would trigger reversing aid, a forward gear and the selection of the indicator would trigger the side vision aid. Driving at speeds of over 5 m.p.h in a forwards direction would trigger the Closing Vehicle Same Lane Aid and the Frontal Collision Warning Aid. These operate at the same time. Whilst these are in operation, a display ( not shown) indicates to the driver which aid is in operation.
The parking a d is triggered only by selection by the driver by the driver select control .
The method of sensing is illustrated in figures 8 to 12 in which a vehicle 7 includes a radar transmitter 59 and antenna 61 mounted in the rear bumper 45 of the vehicle 7. The transmit and receive antennas are respectively positioned at the regions of the rear nearside and rear offside corners of the car.
The sensors are impulse radar sensors and the antenna 61 transmits a series of pulses. The transmitted signal is in the form of a short radio frequency pulse, typically of 0.1 to 5 nanoseconds duration depending on the rise time and the frequency response characteristics of the antenna.
The pulses are similar to those generated by the system shown in published application WO 90/13048. The transmission of pulses by the antenna 59 is initiated by a timing generator 63 which triggers a transmit generator 65 of a transmitter 67 connected to the transmit antenna 59.
The timing generator 65 is also connected to two gating devices 69 and 71 which are, in turn, both connected to the receive antenna 61. Each of the gating devices, in response to a signal from the timing generator 65 samples the signals received by the antenna 61.
The outputs from the gating devices are connected to a signal and control processor 73 which analyses the signal to determine whether or not to initiate an alarm or control interface .
The processor 73 is also connected to a motion sensor ( not shown) which measures the speed with which the car is moving, and to the vehicle control system.
In use, the timing generator 65 causes a selected one of the gating devices to sample the output of the receive antenna 61 at a predetermined delay ( normally of 1 to 200 nanoseconds corresponding to 15cm to 30m) after the transmission of a given pulse by the antenna 59. If the antenna 61 receives the reflection of the pulse during a given sampling period, this is indicative of the transmit pulse having travelled from the antenna 59 to a reflecting surface and back to the antenna 61 in the delay between the transmission of the pulse and the sampling period.
From this information, it can be deduced that the reflecting surface lies somewhere on a range shell, for example the range shell 75 in figure 8, the distance of which from the vehicle 7 is such that the time taken for a pulse to travel to the range shell and back to the vehicle 7 is the same as the delay between the transmission of the pulse and the sampling period. Thus, the range shell can be considered to be in the form of a part ellipsoidal shell having antennas 59 and 61 at its foci. Each range shell may not take the form of a full ellipse enveloping the car because the transmit and receive antennas 59 and 61 may not provide all round coverage.
As can be seen in figure 10, the sensors operate a series of range shells of different distances to pinpoint the target.
The graphs of figures 11 and 12 depict the type of output from the antenna indicating the position of the vehicle 7.

Claims

Claims
1. A motor road vehicle collision warning system comprising an obstacle sensing system, comprising a plurality of sensors together capable of sensing obstacles in any direction around the vehicle wherein each of said plurality of sensors has a predetermined field of view in which it is capable of detecting obstacles and an instantaneous field of view within which obstacles sensed by the sensor causes the obstacle sensing system to generate an obstacle signal, a vehicle operation sensing means for detecting at least one property of the vehicles operation, a zone of concern control means for defining a zone of concern within which sensed obstacles trigger the generation of an obstacle of concern signal whereby the zone of concern is defined in dependance on the property or properties of the vehicles operation sensed by the vehicle operation sensing means, and for controlling the sensors such that the instantaneous field of view of the sensors together cover the zone of concern and a warning control system for receiving said obstacle of concern signals and for determining whether a collision warning signal should be generated.
2. A collision warning system according to claim 1, in which the vehicle operation sensor includes means to detect the gear selected.
3. A collision warning system according to claim 1 or 2, in which the vehicle operation sensor detects steering angle and varies zone of concern dependant upon the direction of travel of the vehicle.
4. A collision warning system according to claim 1,2 or 3 which is multifunctional and capable of operating in at least two sensing modes including a mode switch to select the mode of operation.
5. A collision warning system according to claim 4, in which the mode switch is operated in accordance with a driver select switch.
6. A collision warning system according to claim 4, in which the mode switch is coupled to a mode control which receives signals from the vehicle operation sensing means and determines the mode required from properties of the vehicles operation .
7. A collision warning system according to claim 4, m which the system may operate more than one mode at the same time.
8. A collision warning system according to claim 4, including a display for displaying to the driver the mode of operation of the system.
9. A collision warning system according to claim 1, including a display indicating to the driver the type of collision warning signal generated.
PCT/GB1997/001728 1996-06-28 1997-06-27 Motor road vehicle collision warning system WO1998000728A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9613645.2 1996-06-28
GBGB9613645.2A GB9613645D0 (en) 1996-06-28 1996-06-28 Vehicle radar system

Publications (1)

Publication Number Publication Date
WO1998000728A1 true WO1998000728A1 (en) 1998-01-08

Family

ID=10796075

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/GB1997/001728 WO1998000728A1 (en) 1996-06-28 1997-06-27 Motor road vehicle collision warning system
PCT/GB1997/001765 WO1998000729A1 (en) 1996-06-28 1997-06-30 Vehicle radar system

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/001765 WO1998000729A1 (en) 1996-06-28 1997-06-30 Vehicle radar system

Country Status (5)

Country Link
US (1) US6215438B1 (en)
EP (1) EP0906581B1 (en)
DE (1) DE69709100T2 (en)
GB (1) GB9613645D0 (en)
WO (2) WO1998000728A1 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0936473A1 (en) * 1998-02-16 1999-08-18 Honda Giken Kogyo Kabushiki Kaisha Radar apparatus installed on vehicle for managing reflector information
WO1999042856A2 (en) * 1998-02-19 1999-08-26 Amerigon Inc. High performance vehicle radar system
US6069581A (en) * 1998-02-20 2000-05-30 Amerigon High performance vehicle radar system
WO2001048512A1 (en) * 1999-12-24 2001-07-05 Robert Bosch Gmbh Method and device for detecting and evaluating objects in the vicinity of a motor vehicle
WO2001059473A2 (en) * 2000-02-08 2001-08-16 Cambridge Consultants Limited Methods and apparatus for obtaining positional information
US6380883B1 (en) 1998-02-23 2002-04-30 Amerigon High performance vehicle radar system
EP0952459A3 (en) * 1998-04-23 2002-05-22 Volkswagen Aktiengesellschaft Device for detecting objects for vehicles
US6400308B1 (en) 1998-02-20 2002-06-04 Amerigon Inc. High performance vehicle radar system
US7068211B2 (en) 2000-02-08 2006-06-27 Cambridge Consultants Limited Methods and apparatus for obtaining positional information
EP1739454A2 (en) * 1998-04-23 2007-01-03 Volkswagen Aktiengesellschaft Device for detecting objects for vehicles
EP1912079A2 (en) * 2000-02-08 2008-04-16 Cambridge Consultants Limited Methods and apparatus for obtaining positional information
EP2620786A3 (en) * 2012-01-30 2013-10-02 Hitachi Consumer Electronics Co. Ltd. Vehicle collision risk prediction apparatus
DE102013207905A1 (en) * 2013-04-30 2014-10-30 Bayerische Motoren Werke Aktiengesellschaft A method for efficiently providing occupancy information about portions of the environment of a vehicle
WO2014177447A3 (en) * 2013-04-30 2015-04-02 Bayerische Motoren Werke Aktiengesellschaft Provision of an efficient environmental map for a vehicle
WO2016060748A1 (en) * 2014-10-17 2016-04-21 Qualcomm Incorporated Systems, methods, and apparatus for living object protection in wireless power transfer applications
US10754017B2 (en) * 2017-06-09 2020-08-25 Toyota Jidosha Kabushiki Kaisha Target object information acquisition apparatus
DE10355249B4 (en) 2003-11-26 2021-09-23 Volkswagen Ag Driver assistance system for a motor vehicle

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19856974C1 (en) * 1998-12-10 2000-09-07 Bosch Gmbh Robert Method and device for detecting an obstacle
DE10036042B4 (en) * 2000-07-25 2004-12-16 Daimlerchrysler Ag Multisensorial lane assignment
EP1310018B1 (en) 2000-08-16 2018-07-25 Valeo Radar Systems, Inc. Switched beam antenna architecture
US6657581B1 (en) * 2000-08-16 2003-12-02 Raytheon Company Automotive lane changing aid indicator
DE60107692T2 (en) 2000-08-16 2005-12-15 Raytheon Company, Waltham SYSTEM FOR RECORDING NEARBY OBJECTS
EP1870730A3 (en) * 2000-08-16 2011-07-20 Valeo Radar Systems, Inc. Automotive radar systems and techniques
US6577269B2 (en) 2000-08-16 2003-06-10 Raytheon Company Radar detection method and apparatus
WO2002021156A2 (en) 2000-09-08 2002-03-14 Raytheon Company Path prediction system and method
US6708100B2 (en) 2001-03-14 2004-03-16 Raytheon Company Safe distance algorithm for adaptive cruise control
DE10125311A1 (en) * 2001-05-23 2002-11-28 Delphi Tech Inc Monitoring system, for motor vehicles, detects faults using radar signals reflected at defined smaller distance or spherical shell compared to incursion detection reflection distance
US20020189336A1 (en) * 2001-06-15 2002-12-19 Mcewan Technologies, Llc Radar monitoring system for tires and wheels
GB2378597A (en) * 2001-08-06 2003-02-12 Roke Manor Research Object Detection Device
US6995730B2 (en) * 2001-08-16 2006-02-07 Raytheon Company Antenna configurations for reduced radar complexity
US6873250B2 (en) * 2001-12-14 2005-03-29 Raytheon Company Back-up aid indicator using FMCW chirp signal or a time domain pulse signal
JP3995500B2 (en) * 2002-02-27 2007-10-24 富士通テン株式会社 Radar device antenna axis adjustment method, radar device, radar device manufacturing method, and radar device antenna axis adjustment device
US6611227B1 (en) 2002-08-08 2003-08-26 Raytheon Company Automotive side object detection sensor blockage detection system and related techniques
DE10258097A1 (en) * 2002-12-11 2004-07-01 Robert Bosch Gmbh Device for measuring the distance and speed of objects
DE10258367A1 (en) * 2002-12-12 2004-07-08 Daimlerchrysler Ag Multi-objective method and multi-objective sensor device for the distance and angle localization of target objects in the vicinity
DE10307463A1 (en) * 2003-02-21 2004-09-02 Robert Bosch Gmbh Device for detecting an obstacle course
EP1519204B1 (en) * 2003-09-29 2010-03-24 Volkswagen Aktiengesellschaft Multistatic radar for vehicle
DE102004044130A1 (en) * 2004-09-13 2006-03-30 Robert Bosch Gmbh Monostatic planar multi-beam radar sensor
US20060132349A1 (en) * 2004-12-22 2006-06-22 Stern Ari K Radar detector with signal source location determination and filtering
DE102004062023B4 (en) * 2004-12-23 2021-12-23 Robert Bosch Gmbh Radar system for monitoring targets in different distance ranges
DE102005055107A1 (en) * 2005-11-18 2007-05-24 Valeo Schalter Und Sensoren Gmbh System for detecting objects in the surroundings of a motor vehicle
JP4912005B2 (en) * 2006-03-23 2012-04-04 オムロンオートモーティブエレクトロニクス株式会社 Detection apparatus and method
US20080088499A1 (en) * 2006-05-24 2008-04-17 Bonthron Andrew J Methods and apparatus for hyperview automotive radar
JP4769684B2 (en) * 2006-10-12 2011-09-07 株式会社デンソーアイティーラボラトリ Electronic scanning radar equipment
US8004454B2 (en) * 2006-11-17 2011-08-23 Sony Ericsson Mobile Communications Ab Mobile electronic device equipped with radar
TWI348555B (en) * 2007-10-30 2011-09-11 Univ Nat Taiwan Target detection device and its detection method
DE102007060769A1 (en) * 2007-12-17 2009-06-18 Robert Bosch Gmbh Monostatic multi-beam radar sensor, as well as methods
WO2009123957A1 (en) * 2008-03-31 2009-10-08 Valeo Radar Systems, Inc. Automotive radar sensor blockage detection apparatus and method
EP2294444A1 (en) * 2008-05-05 2011-03-16 Raytheon Company Methods and apparatus for detection/classification of radar targets including birds and other hazards
US9279882B2 (en) * 2008-09-19 2016-03-08 Caterpillar Inc. Machine sensor calibration system
WO2010121118A1 (en) * 2009-04-17 2010-10-21 Raytheon Company Methods and apparatus for integration of distributed sensors and airport surveillance radar to mitigate blind spots
US8441394B2 (en) * 2011-07-11 2013-05-14 Delphi Technologies, Inc. System and method for detecting obstructions and misalignment of ground vehicle radar systems
KR20140103951A (en) * 2011-11-21 2014-08-27 콘티넨탈 테베스 아게 운트 코. 오하게 Method and device for the position determination of objects in road traffic, based on communication signals, and use of the device
TWI464407B (en) 2012-11-30 2014-12-11 Ind Tech Res Inst Electronic device and method for sensing active state of object
US9877659B2 (en) 2012-11-30 2018-01-30 Industrial Technology Research Institute Sensing system and method for physiology measurements
JP6218061B2 (en) * 2013-03-06 2017-10-25 パナソニックＩｐマネジメント株式会社 Object detection device
US9606224B2 (en) * 2014-01-14 2017-03-28 Alstom Transport Technologies Systems and methods for vehicle position detection
US20150204969A1 (en) * 2014-01-17 2015-07-23 SpotterRF LLC Target spotting and tracking apparatus and method
US10317525B2 (en) 2014-03-21 2019-06-11 Houston Radar Llc Robust dual-radar-beam systems and methods for traffic monitoring
CN103905989A (en) * 2014-04-23 2014-07-02 天翼爱音乐文化科技有限公司 Mobile terminal pairing triggering method and system
US9618611B2 (en) * 2014-09-24 2017-04-11 Nxp B.V. Personal radar assistance
DE102014014307A1 (en) 2014-09-25 2016-03-31 Audi Ag Method for operating a plurality of radar sensors in a motor vehicle and motor vehicle
KR20160043377A (en) * 2014-10-13 2016-04-21 현대모비스 주식회사 Radar Control device and method for vehicle
DE102014223363B4 (en) * 2014-11-17 2021-04-29 Volkswagen Aktiengesellschaft Method and device for localizing a motor vehicle in a fixed reference map
US9810782B2 (en) * 2015-03-20 2017-11-07 Delphi Technologies, Inc. Vehicle radar system with image reflection detection
US10509121B2 (en) * 2016-03-04 2019-12-17 Uatc, Llc Dynamic range setting for vehicular radars
US10408931B2 (en) 2016-11-15 2019-09-10 Veoneer Us, Inc. Radar module
JP7211212B2 (en) * 2019-03-29 2023-01-24 株式会社デンソー Ranging module
US11454716B2 (en) * 2019-12-30 2022-09-27 Woven Planet North America, Inc. Systems and methods for adaptive gating in initialization of radar tracking

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5357438A (en) * 1992-06-04 1994-10-18 Dan Davidian Anti-collision system for vehicles
EP0657857A1 (en) * 1993-12-07 1995-06-14 Mazda Motor Corporation Traveling control system for motor vehicle
WO1996014591A1 (en) * 1994-11-04 1996-05-17 Charles Rashid Vehicle radar safety apparatus
EP0717290A2 (en) * 1994-12-13 1996-06-19 Honda Giken Kogyo Kabushiki Kaisha Vehicle-surroundings monitoring apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3660846A (en) * 1969-10-23 1972-05-02 Lawrence F Anderson Automatic collision warning system
FR2119850B1 (en) * 1970-12-29 1976-02-06 Labo Cent Telecommunicat
US3735398A (en) * 1971-05-20 1973-05-22 Sperry Rand Corp Base band short range pre-collision sensor for actuation of vehicle safety apparatus
US3898653A (en) * 1972-02-22 1975-08-05 Mitsubishi Electric Corp Automotive radar sensor
DE2646540A1 (en) * 1976-10-15 1978-04-20 Bosch Gmbh Robert METHOD AND DEVICE FOR LOCATION DEPTH CONTROL IN A PULSE RADAR SYSTEM
US5510800A (en) * 1993-04-12 1996-04-23 The Regents Of The University Of California Time-of-flight radio location system
FR2709834B1 (en) * 1993-09-10 1995-11-10 Framatome Sa Method and device for detecting and locating obstacles in the environment of a vehicle.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5357438A (en) * 1992-06-04 1994-10-18 Dan Davidian Anti-collision system for vehicles
EP0657857A1 (en) * 1993-12-07 1995-06-14 Mazda Motor Corporation Traveling control system for motor vehicle
WO1996014591A1 (en) * 1994-11-04 1996-05-17 Charles Rashid Vehicle radar safety apparatus
EP0717290A2 (en) * 1994-12-13 1996-06-19 Honda Giken Kogyo Kabushiki Kaisha Vehicle-surroundings monitoring apparatus

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0936473A1 (en) * 1998-02-16 1999-08-18 Honda Giken Kogyo Kabushiki Kaisha Radar apparatus installed on vehicle for managing reflector information
US6008751A (en) * 1998-02-16 1999-12-28 Honda Giken Kogyo Kabushiki Kaisha Radar apparatus installed on vehicle for managing reflector information
WO1999042856A2 (en) * 1998-02-19 1999-08-26 Amerigon Inc. High performance vehicle radar system
WO1999042856A3 (en) * 1998-02-19 2000-05-04 Amerigon Inc High performance vehicle radar system
US6069581A (en) * 1998-02-20 2000-05-30 Amerigon High performance vehicle radar system
US6232910B1 (en) 1998-02-20 2001-05-15 Amerigon, Inc. High performance vehicle radar system
US6400308B1 (en) 1998-02-20 2002-06-04 Amerigon Inc. High performance vehicle radar system
US6380883B1 (en) 1998-02-23 2002-04-30 Amerigon High performance vehicle radar system
EP1739453A3 (en) * 1998-04-23 2008-03-05 Volkswagen Aktiengesellschaft Device for detecting objects for vehicles
EP1739453A2 (en) * 1998-04-23 2007-01-03 Volkswagen Aktiengesellschaft Device for detecting objects for vehicles
EP0952459A3 (en) * 1998-04-23 2002-05-22 Volkswagen Aktiengesellschaft Device for detecting objects for vehicles
EP1739454A3 (en) * 1998-04-23 2008-03-05 Volkswagen Aktiengesellschaft Device for detecting objects for vehicles
EP1739454A2 (en) * 1998-04-23 2007-01-03 Volkswagen Aktiengesellschaft Device for detecting objects for vehicles
WO2001048512A1 (en) * 1999-12-24 2001-07-05 Robert Bosch Gmbh Method and device for detecting and evaluating objects in the vicinity of a motor vehicle
US6611759B2 (en) 1999-12-24 2003-08-26 Robert Bosch Gmbh Method and device for detecting and evaluating objects in the vicinity of a motor vehicle
WO2001059473A2 (en) * 2000-02-08 2001-08-16 Cambridge Consultants Limited Methods and apparatus for obtaining positional information
US7227493B2 (en) 2000-02-08 2007-06-05 Cambridge Consultants Limited Methods and apparatus for obtaining positional information
US7068211B2 (en) 2000-02-08 2006-06-27 Cambridge Consultants Limited Methods and apparatus for obtaining positional information
WO2001059473A3 (en) * 2000-02-08 2001-12-20 Cambridge Consultants Methods and apparatus for obtaining positional information
EP1912079A2 (en) * 2000-02-08 2008-04-16 Cambridge Consultants Limited Methods and apparatus for obtaining positional information
DE10355249B4 (en) 2003-11-26 2021-09-23 Volkswagen Ag Driver assistance system for a motor vehicle
EP2620786A3 (en) * 2012-01-30 2013-10-02 Hitachi Consumer Electronics Co. Ltd. Vehicle collision risk prediction apparatus
WO2014177447A3 (en) * 2013-04-30 2015-04-02 Bayerische Motoren Werke Aktiengesellschaft Provision of an efficient environmental map for a vehicle
US9792819B2 (en) 2013-04-30 2017-10-17 Bayerische Motoren Werke Aktiengesellschaft Provision of an efficient environmental map for a vehicle
DE102013207905A1 (en) * 2013-04-30 2014-10-30 Bayerische Motoren Werke Aktiengesellschaft A method for efficiently providing occupancy information about portions of the environment of a vehicle
WO2016060748A1 (en) * 2014-10-17 2016-04-21 Qualcomm Incorporated Systems, methods, and apparatus for living object protection in wireless power transfer applications
CN107074124A (en) * 2014-10-17 2017-08-18 高通股份有限公司 System, the method and apparatus of live body object protection in being applied for wireless power transmission
US9983300B2 (en) 2014-10-17 2018-05-29 Qualcomm Incorporated Systems, methods, and apparatus for living object protection in wireless power transfer applications
CN107074124B (en) * 2014-10-17 2019-08-16 韦特里西提公司 System, method and apparatus for the living body object protection in wireless power transmission application
US10754017B2 (en) * 2017-06-09 2020-08-25 Toyota Jidosha Kabushiki Kaisha Target object information acquisition apparatus

Also Published As

Publication number Publication date
EP0906581A1 (en) 1999-04-07
WO1998000729A1 (en) 1998-01-08
DE69709100T2 (en) 2002-10-31
DE69709100D1 (en) 2002-01-24
US6215438B1 (en) 2001-04-10
EP0906581B1 (en) 2001-12-12
GB9613645D0 (en) 1996-08-28

Similar Documents

Publication Publication Date Title
WO1998000728A1 (en) Motor road vehicle collision warning system
US5999092A (en) Antenna cluster for a motor road vehicle collision warning system
US5754123A (en) Hybrid ultrasonic and radar based backup aid
US6281786B1 (en) Obstacle detection system for a vehicle
US7830243B2 (en) Dual mode vehicle blind spot system
US6363326B1 (en) Method and apparatus for detecting an object on a side of or backwards of a vehicle
US7248153B2 (en) Method for parking a vehicle
US20070279199A1 (en) Device for Detecting Moving Objects
US20090254260A1 (en) Full speed range adaptive cruise control system
EP3579212B1 (en) Alarm system for vehicle
KR20000062430A (en) Method for determining the vertical distance between an object and a device with a variable position
EP2577640A1 (en) Vehicle radar system and method for detecting objects
WO2013081998A1 (en) Camera-assisted blind spot detection
US6215415B1 (en) Parking aid for a motor vehicle having sensors with substantially the same detection area
JPH06127318A (en) Detecting device of length of parking space
EP1528526B1 (en) Mobile unit detection system
CN205220511U (en) Car safe driving assists detecting system
JP3712425B2 (en) Obstacle detection device
WO2005022193A1 (en) Parking aid
GB2266397A (en) Vehicle manoeuvring aid
US20060071764A1 (en) Merge Sensor Control System
CN109229015B (en) Method for realizing vehicle 360-degree obstacle alarm prompt based on ultrasonic sensor
JPS62278477A (en) Aid system for garaging automobile
US20120050025A1 (en) Vehicle steering assist system and method of operation
US20040210350A1 (en) Leaky cable based method and system for automotive parking aid, reversing aid, and pre-collision sensing

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase